In short, a team from Poland is working on an unofficial add-on to the game, which lets you compare people's gameplay stats whilst in-game. Player names are colour-coded (in order of skill: red, yellow, green, cyan, purple) in the sidebars, so you can compare the players on both teams, and adjust your combat strategy accordingly. This may range from focus-firing on highly skilled enemies, or providing supporting fire for team members which are likely to carry the match.